Oscillating valve



Nov. 18, 1930. J. GAMACHE OSCILLATING VALVE Filed Jan. 23, 1929 JOSE/ Patented Nov. 18, 1 930 a l UNITED STATES JOSEPHGAVMACHE, or Los nnenLii-sfoemronnm,.nssienon 'ro IMPERIAL oscniLAT-c" i nEvAnaaoonroRATIoN OF NEVADA if me VALVE ooMrANY, or" LAS V GAS,

, PATENT o-Fries oscittnrm'e VALVE:

Application filed J'anuary 23, 1929. Serial No. 334,467.

My invention relates generally to valves and more particularly to an oscillating valve that is especially designed for controllin g the inlet of gaseo'usfuelbhargcs to the com'busg 'tion chambers of internal combustion engines and likewise for controlling the discharge or exhaust of the burntproducts of combustion from the combustion chambers.

. The principal objects of my invention are to generally improve upon and simplify the construction of the existing forms of oscillating valves to provide simple and efficient means for ,converting the rotary motion of a cam shaft to oscillatory movement and imparting said movement tothevalve, further to provide an oscillating valve and-its actuating mechanism that is capable of being readily iassembledor taken apart andto construct-and mount thevalve so that it operates with a minimum degree of friction. I

1 Further objects of my invention are to provide an oscillating valve of the character referred to thatis relatively simple in construction, inexpensive of manufacture, eflicient and reliable in operation, andi which acts to positively control, without leakage, the flow of gaseous fuel to the combustion chain bers of an engine, and likewise to control the discharge of the burnt gases from the combustion chambers.

With therforegoing and other objects in 'view, my invention consists in certain novel features of construction and arrangement of parts that will hereinafter be more fully def scribed and claimed and illustrated in the accompanying drawings, in which: i

Fig' 1 is avertical section taken length wise through thecenter of an internal combustion engine cylinder and showing my unproved valve associated therewith.

"Fig. 2 is a horizontal section taken on the line 2-'2 of Fig, 1. j I Fig. 3 is an elevational v1ew of the cam that is utilized for imparting oscillatory movement to the valve stem with parts of the motion converting mechanism in sec-V tion.

Fig. 4 is utilized for convert ng the rotary motionof a plan view of the link motion a shaftinto oscillatory motion and transmitting same to the, Valve carrying stem.-

Re'ferring by numerals to the accompanying drawings which illust'rate a practicalem- I bodiment of my invention, 10 designates the is formedanextension 12, of the combustion chamber withinth'e cylinder 10, and arranged for operation within' the cylinder 10 is a i ton- 13.1 V c ally from the head 11 is an extension 1 1- through whlch is formed a throat 15 that eschamber 12- v disposed valvechamber 17-that tapers; gradually toward its lower endand arranged for oscillatory movement within thischamber 17 is a taperedvalveilS. Y Y JSecure'd on top of theextension '14 is a removable plate 19 that functions as a head for the valvechamber andflleading to. an

- Formed integral with and projecting later- Formed in the extension 14 is a -vertically opening that is formed ingthe center of said head isa lubricant supply pipe 20;

Formed integral withthe top of; the valve 18: is a short cylindrical plug 21 that projects 1nto a correspondingaperture 'or recess 22 that is formed, in the underside of head 19.

There is sufiicient clearance between the top of valve 18 -and'thecylindrical plug 21'and the head 19 to permit the valve 18 to expand lengthwise when heated; r

lVhen the valve 18 is fitted into the tapered chamber '17 the lower end of said valve is spaced above the bottomof saidchamber,

thereby providing suflicient clearance to en able the valve to move downwardly, thereby maintaining a tight joint betweenthe valvev and the extension 1 1, even though wear should occur between said valve and the wall surrounding the chamber '17. V

Depending from the vale 18 is an axially disposed stem 23 that is connected by a uni versalcoup'ling 2 1 to the upper end of a stem 25,Vand said lastmentioned stem is mounted for rotation in a cylindrical block'26 that is secured on an extension 27' of the lower portion of the cylinder block.

Arranged on valve stem 23 between the extension and the coupling 25 is an expansive Iii coil spring 23 that normally exerts clownward pressure on said couphngandthe valve stem witlrwhich the same lS aSSOCIZGtG'Gl.

' Arranged between the cylindrical member v 26 and the stem 25 are suitableantifriction bearings 28 and a cone 29 that engages the upperset of these hearings and is engaged by a nut 30 that is mounted on a threadedportion of stem 25.

ings below-the lower end of stem 25 is a cam shaft 32' that is driven preferably from the crank shaft on the engine," and mounted on said shaft 32 are disks 33,- t'he same being spaced apart to forma channel 34, whichl'atter is provided with an offset portion orlarterzal extension 35. Thea xis of the cam shaft 32 is of" this lever is intersected by the axis ofthe valvestem 25..

'Pivotally secured to" the underside of the extension 27 and to oneside of the axis o-fthe valve stem .by means'of a pin'orbolt: 36, is one end of a horizontally disposed lever 37 that extends across and-beyond the axis of the valve stem a'nd' formed in the outer portion M a short longitudinally disposed-slot 38.

Formed integral with or fixed to the'lower end of the stem 25 and positioned directly above the lever 37is a short horizontal ly'dis a posed crank arm'39 and depending from the outer'portion thereof is apin 40 that occupies the slot 38. I V

Suitably journal'ed on the underside of the lever 37 between the pivot pin '36 and the slot 38-, and in axialalinement with-the valve stem 25 is a roller 41 thatprojects into the channel 34 between the cam disks 33.

The valve 18 is provid'edwith a chamber 42, and formed through the wall surrounding this chamber is a relatively large port 43 that is constantly in communication with that end of the throat or passage 15-that communicates with the manifold 16 and formed through the wall of the valve is a smaller port 44 that is adapted, asthe valve is oscillated, to intermittently'move into registration with that portion of the throat or passageway. 15 that communicates with the clearance chamber 12.

In the operation of iny'improved valve cam shaft 32 is rotated from the crank shaft of the engine and the roller 41 traversing the slot crpassageway between the cams 33 is moveda short distance laterally as it passes through the lateral extension 35 ofsaid sageway; and a resultthe leverSY-isswung valve stem 25 will swing through an are .2.-

Fig. 4, and consequently partial rotarymovementfwill be transmitted to thevalve carrying stem 25.

Thus by providing the lever 37 and the crank arm 39, and which lever and crank arm have different radii, a-relatively short lateral movement of the roller 41 between the disks 33 will be effective in swing ng the crank arm 39a sufficient distance to rotarte" tlrevalve' carrying stem 25 so that the; port 414 of the valve will be brought into registration with the corresponding end of thethr'oat or passage 15. r

When this registration is effected gaseous fuel is free to pass from the manifold through the valve into the combustion chamber of the engine with which the valve is associated, or the burnt products of eombustion may discharge from the combustionchamber through a similar valveto the exhaust manifold.

It will be understood'that there are two valves for each enginecylinder 'one'va lve taking care of theinlet of gaseous fuel to'the combustion chamber and the-other valve'permitting the exhaust of burnt productsof combustion from the combustion chamber.

The valve stem operates with comparatively little friction, due to the provision: of the ball bearings 28 at the ends of the-eylindrical member 26 and the universal coupling 24 that connects the valve stems 23=-and 25 compensates for any variation in the axial alinement between the two part sof the stem.

Further, the coupling 24 permitsthe valve 18 and its stem 23 to be readily disconnected without disturbing the actuating parts-of the valve and the spring 23 normally exerts downward pressure i against the coupling 24 so as to constantly draw the valve chamber through tube 20.

Thus it will be seen that I have provided an oscillating valve that is relatively simple in constructiom inexpensive of manufacture, capable of'being readily assembled or taken apart, and which valve is verye'ffect'ive in performing the functions for which it is intended.

It will be understood that minor changes in the size, form and constmctioirofthe variouspartssofmy improved oscillating-valve valve. and thesurmay be made and substituted for those herein shown and described without departing from the spirit of my invention, the scope of which is set forth in the appended claims.

I claim as my invention:

1. In an oscillating valve, a valve carrying stem, a crank arm projecting from the lower end of said stem, a leverfulcrumed at one end and having a pin and slot connection with said crank arm, a roller journaled on said lever between its fulcrum and thepin and slot connection with said crank arm, and a cam for engaging and actuatingsaid'roller.

" 2. In an oscillating valve, a valve carrying stem, a crank arm carriedby said stem, a lever fulcrumed at one end and having a pin and slot connection with vsaid crank arm, said lever and crank arm having different radii, a roller journaled "on said lever in axial alinement with the valve carrying stem,

and a cam for engaging said roller and imparting'swinging movement to said lever. I

3. The combination with an internal com bustion engine, of an oscillatory valve associated with said engine,'a stem carrying said valve, a. crank arm carried by said stem, a lever pivotally supported at one end, the opposite end having a pin and slot connection with said crank arm, a roller projecting'from the intermediate portion of said lever, a cam shaft mounted for operation so thatits axis is intersected by the axis of the valvestem, and a cam carried by said shaft and engaging said roller.

4. The combination with an internalcombustion engine, of an oscillatory valve associated with said engine, a stem depending from said valve, a crank arm projecting from said stem, a lever fulcrumed at one end and having at its opposite end a pin and slot con nection with said crank arm, a roller carried by said lever,rwhich roller is coaxial with said stem, a cam shaft journaled for rotation and arranged sothat 1ts axis 1s lntersected by the axis of the valve stem, and a cam carried by said shaft and engagingsaid roller.

In testimony whereof I affix my signature. I

JOSEPH GAMACHE. 

